نتایج جستجو برای: 2 proto
تعداد نتایج: 2546199 فیلتر نتایج به سال:
Relationships between proto-fuzzy concepts, crisply generated fuzzy concepts, and pattern structures are considered. It is shown that proto-fuzzy concepts are closely related to crisply generated fuzzy concepts in the sense that the mappings involved in the definitions coincide for crisp subsets of attributes. Moreover, a proto-fuzzy concept determines a crisp subset of attributes, which genera...
In June 2012, the Piaoshan kiln site was excavated in Huzhou, Zhejiang Province, which hitherto proved to be the earliest known Chinese proto-porcelain kiln. Judging from the decorative patterns of unearthed impressed stoneware and proto-porcelain sherds, the site was determined to date to the late Xia (c. 2070-c. 1600 BC), the first dynasty of China. Here, we report on proton-induced X-ray emi...
We have investigated the expression of the dbl protooncogene in a wide variety of human tumors of different embryological derivation. We found that proto-dbl mRNA could be detected preferentially in a few neoplastic histiotypes of neuroectodermal origin. The common, normal 5-kilobase size of the proto-dbl transcript detected indicated that the proto-dbl in these tumors was not rearranged. These...
Tumour progression involves the inactivation of tumour suppressor genes and the activation of proto-oncogenes. Inactivation of both copies of a tumour suppressor gene is required for carcinogenesis, while germline deletion or inactivation of one copy results in an increase in the risk of cancer and is responsible for many of the known hereditary cancer syndromes. In contrast, activation of only...
the present article investigates the administrative structure of the pottery mound from an administrative management point of view. data obtained from excavation of the pottery mound has generated an extensive archeological databank relating to the beginning of the historical era with a focus on the emergence of management and administrative systems in the central iranian plateau. in the proto-...
I consider whether the content of a speech act is best represented by a set of possible worlds or by an ordered set containing the individual and properties the speech act is about. I argue that there is nothing in such contents that an ordered set can represent that a set of worlds cannot. In particular, both can be used to capture what is distinctive about singular propositions. But a set of ...
We introduce the family of R-based proto-Boolean rings associated with an arbitrary commutative ring R. They generalize the protoBoolean algebra devised by Brown [4] as a tool for expressing in modern language Boole’s research in The Laws of Thought. In fact the algebraic results from [4] are recaptured within the framework of proto-Boolean rings, along with other theorems. The free Boolean alg...
The first stars to form in protogalaxies must have primordial chemical composition. We refer to a protogalaxy that is forming stars of primordial composition, or very low metallicity (Z ≤ 0.01Z⊙), as “Primordial Proto–Galaxy” (PPG). PPGs contain little or no dust, and therefore their spectral energy distribution can be modelled from the rest–frame ultraviolet to the infrared without accounting ...
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